Alert archive / Virginia / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 252, NWS Baltimore/Washington

August 6, 20164 counties in Virginia

NWS Baltimore/Washington issued this severe thunderstorm warning at Aug 6, 2016, 4:08 PM EDT for 4 counties in Virginia. It was in force for 52 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Aug 6, 2016, 4:08 PM EDT (20:08 UTC)
Expired
Aug 6, 2016, 5:00 PM EDT
In force
52 min
Issued by
NWS Baltimore/Washington
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Culpeper County, VA, Orange County, VA, Spotsylvania County, VA, Stafford County, VA

The radar

The Sterling radar (KLWX), 91 km from the middle of the area, began a volume at 20:10 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 8.1 hours before the alert went out and 91 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Washington/Dulle, VA at 12:00Z on 2016-08-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 157 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Washington/Dulle, VA at 12:00Z on 2016-08-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 54 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
157 J/kg
Mixed-layer CIN
-64 J/kg
Mixed-layer LCL
934 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
54 m²/s²
0-3 km storm-relative helicity
78 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

022 
WUUS51 KLWX 062008
SVRLWX
VAC047-137-177-179-062100-
/O.NEW.KLWX.SV.W.0252.160806T2008Z-160806T2100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
408 PM EDT SAT AUG 6 2016

THE NATIONAL WEATHER SERVICE IN STERLING VIRGINIA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN STAFFORD COUNTY IN NORTHERN VIRGINIA...
  EASTERN ORANGE COUNTY IN CENTRAL VIRGINIA...
  SOUTHEASTERN CULPEPER COUNTY IN NORTHERN VIRGINIA...
  SPOTSYLVANIA COUNTY IN CENTRAL VIRGINIA...

* UNTIL 500 PM EDT

* AT 408 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED 14 MILES EAST OF
  ORANGE...MOVING SOUTHEAST AT 25 MPH.

  HAZARD...60 MPH WIND GUSTS. 

  SOURCE...RADAR INDICATED. 

  IMPACT...DAMAGING WINDS WILL CAUSE SOME TREES AND LARGE BRANCHES 
           TO FALL. THIS COULD INJURE THOSE OUTDOORS...AS WELL AS 
           DAMAGE HOMES AND VEHICLES. ROADWAYS MAY BECOME BLOCKED BY 
           DOWNED TREES. LOCALIZED POWER OUTAGES ARE POSSIBLE. 
           UNSECURED LIGHT OBJECTS MAY BECOME PROJECTILES. 

* LOCATIONS IMPACTED INCLUDE...
  MASSAPONAX...SPOTSYLVANIA...POST OAK...LIGNUM...LAKE OF THE
  WOODS...ALSOP...VERDIERSVILLE...FLAT RUN...LOGAN...RAPIDAN...
  DUNAVANT...BURR HILL...CHANCELLORSVILLE...UNIONVILLE...GOLD DALE...
  SNELL...LOCUST GROVE...LAHORE...GLENORA AND RACCOON FORD.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

GET INDOORS TO PROTECT YOURSELF FROM WIND AND LIGHTNING. TREES AROUND
YOU MAY BE DOWNED FROM DAMAGING WINDS...SO IF YOU ARE NEAR LARGE
TREES...MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR. DON'T DRIVE
UNDERNEATH TREES OR IN WOODED AREAS UNTIL THE THREAT HAS PASSED.

&&

LAT...LON 3805 7775 3805 7777 3808 7779 3808 7781
      3811 7784 3810 7786 3812 7792 3811 7793
      3831 7808 3843 7792 3844 7777 3841 7773
      3842 7772 3839 7765 3819 7746 3803 7773
      3803 7775
TIME...MOT...LOC 2008Z 321DEG 20KT 3829 7785 

HAIL...<.75IN
WIND...60MPH
 
$$

BJL
3 follow-up statements
411 
WWUS51 KLWX 062026
SVSLWX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
426 PM EDT SAT AUG 6 2016

VAC047-137-177-179-062100-
/O.CON.KLWX.SV.W.0252.000000T0000Z-160806T2100Z/
STAFFORD VA-ORANGE VA-CULPEPER VA-SPOTSYLVANIA VA-
426 PM EDT SAT AUG 6 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM EDT
FOR SOUTHWESTERN STAFFORD...EASTERN ORANGE...SOUTHEASTERN CULPEPER
AND SPOTSYLVANIA COUNTIES...

AT 425 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED 12 MILES WEST OF
SPOTSYLVANIA...OR 15 MILES EAST OF ORANGE...MOVING SOUTHEAST AT 25
MPH.

HAZARD...60 MPH WIND GUSTS. 

SOURCE...RADAR INDICATED. 

IMPACT...DAMAGING WINDS WILL CAUSE SOME TREES AND LARGE BRANCHES TO 
         FALL. THIS COULD INJURE THOSE OUTDOORS...AS WELL AS DAMAGE 
         HOMES AND VEHICLES. ROADWAYS MAY BECOME BLOCKED BY DOWNED 
         TREES. LOCALIZED POWER OUTAGES ARE POSSIBLE. UNSECURED 
         LIGHT OBJECTS MAY BECOME PROJECTILES. 

LOCATIONS IMPACTED INCLUDE...
MASSAPONAX...SPOTSYLVANIA...POST OAK...LAKE OF THE WOODS...ALSOP...
VERDIERSVILLE...FLAT RUN...LOGAN...DUNAVANT...BURR HILL...
CHANCELLORSVILLE...UNIONVILLE...GOLD DALE...SNELL...LOCUST GROVE...
LAHORE...GLENORA...PARKER...GATEWOOD AND RHOADESVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

GET INDOORS TO PROTECT YOURSELF FROM WIND AND LIGHTNING. TREES AROUND
YOU MAY BE DOWNED FROM DAMAGING WINDS...SO IF YOU ARE NEAR LARGE
TREES...MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR. DON'T DRIVE
UNDERNEATH TREES OR IN WOODED AREAS UNTIL THE THREAT HAS PASSED.

&&

LAT...LON 3825 7804 3837 7792 3843 7775 3841 7773
      3842 7772 3839 7765 3819 7746 3803 7773
      3803 7775 3805 7775 3805 7777 3808 7779
      3808 7781 3811 7784 3810 7786 3812 7792
      3811 7793
TIME...MOT...LOC 2025Z 320DEG 21KT 3823 7782 

HAIL...<.75IN
WIND...60MPH
 
$$

BJL
737 
WWUS51 KLWX 062044
SVSLWX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
444 PM EDT SAT AUG 6 2016

VAC047-179-062054-
/O.CAN.KLWX.SV.W.0252.000000T0000Z-160806T2100Z/
STAFFORD VA-CULPEPER VA-
444 PM EDT SAT AUG 6 2016

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN STAFFORD AND
SOUTHEASTERN CULPEPER COUNTIES IS CANCELLED...
    
THE SEVERE THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF
THE AREA. THEREFORE...THE WARNING HAS BEEN CANCELLED.

LAT...LON 3816 7797 3835 7770 3816 7751 3803 7773
      3803 7775 3805 7775 3805 7777 3808 7779
      3808 7781 3811 7784 3810 7786 3812 7792
      3811 7793
TIME...MOT...LOC 2044Z 319DEG 26KT 3812 7772 

$$

VAC137-177-062100-
/O.CON.KLWX.SV.W.0252.000000T0000Z-160806T2100Z/
ORANGE VA-SPOTSYLVANIA VA-
444 PM EDT SAT AUG 6 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM EDT
FOR SOUTHEASTERN ORANGE AND SPOTSYLVANIA COUNTIES...

AT 444 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED 8 MILES SOUTHWEST
OF
SPOTSYLVANIA...OR 12 MILES NORTHEAST OF MINERAL...MOVING SOUTHEAST AT
30 MPH.

HAZARD...60 MPH WIND GUSTS. 

SOURCE...RADAR INDICATED. 

IMPACT...DAMAGING WINDS WILL CAUSE SOME TREES AND LARGE BRANCHES TO 
         FALL. THIS COULD INJURE THOSE OUTDOORS...AS WELL AS DAMAGE 
         HOMES AND VEHICLES. ROADWAYS MAY BECOME BLOCKED BY DOWNED 
         TREES. LOCALIZED POWER OUTAGES ARE POSSIBLE. UNSECURED 
         LIGHT OBJECTS MAY BECOME PROJECTILES. 

LOCATIONS IMPACTED INCLUDE...
SPOTSYLVANIA...COOKSTOWN...POST OAK...GOLD DALE...GLENORA...ALSOP...
SNELL...LOGAN...PARKER...GATEWOOD AND BROKENBURG.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

GET INDOORS TO PROTECT YOURSELF FROM WIND AND LIGHTNING. TREES AROUND
YOU MAY BE DOWNED FROM DAMAGING WINDS...SO IF YOU ARE NEAR LARGE
TREES...MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR. DON'T DRIVE
UNDERNEATH TREES OR IN WOODED AREAS UNTIL THE THREAT HAS PASSED.

&&

LAT...LON 3816 7797 3835 7770 3816 7751 3803 7773
      3803 7775 3805 7775 3805 7777 3808 7779
      3808 7781 3811 7784 3810 7786 3812 7792
      3811 7793
TIME...MOT...LOC 2044Z 319DEG 26KT 3812 7772 

HAIL...<.75IN
WIND...60MPH
 
$$

BJL
994 
WWUS51 KLWX 062101
SVSLWX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
501 PM EDT SAT AUG 6 2016

VAC137-177-062111-
/O.EXP.KLWX.SV.W.0252.000000T0000Z-160806T2100Z/
ORANGE VA-SPOTSYLVANIA VA-
501 PM EDT SAT AUG 6 2016

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN ORANGE AND
SPOTSYLVANIA COUNTIES HAS EXPIRED...
                
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSE AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
THEREFORE THE WARNING HAS BEEN ALLOWED TO EXPIRE.

LAT...LON 3816 7797 3835 7770 3816 7751 3803 7773
      3803 7775 3805 7775 3805 7777 3808 7779
      3808 7781 3811 7784 3810 7786 3812 7792
      3811 7793
TIME...MOT...LOC 2101Z 321DEG 20KT 3806 7766 

$$

BJL

The office that day

Everything else NWS Baltimore/Washington issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 6, 2:06 PM EDTSevere Thunderstorm WarningLWXFauquier, Prince William39 min
Aug 6, 2:37 PM EDTSpecial Marine WarningLWX113 min
Aug 6, 3:12 PM EDTSevere Thunderstorm WarningLWXCulpeper, Fauquier, Rappahannock48 min
Aug 6, 3:22 PM EDTSpecial Marine WarningLWX53 min
Aug 6, 3:36 PM EDTSevere Thunderstorm WarningLWXCulpeper, Madison, Rappahannock24 min
Aug 6, 4:10 PM EDTAreal Flood WarningLWXAlbemarle, City of Charlottesville6 hr
Aug 6, 4:11 PM EDTSevere Thunderstorm WarningLWXAlbemarle, City of Charlottesville49 min
Aug 6, 4:17 PM EDTSpecial Marine WarningLWX118 min
Aug 6, 4:18 PM EDTAreal Flood WarningLWXCulpeper, Madison, Orange, Rappahannock, Spotsylvania3 hr
Aug 6, 4:23 PM EDTSpecial Marine WarningLWX2 hr
Aug 6, 4:51 PM EDTSpecial Marine WarningLWX114 min
Aug 6, 5:00 PM EDTAreal Flood WarningLWXAlbemarle, Augusta, Nelson, Rockingham, City of Waynesboro3 hr
Aug 6, 5:40 PM EDTSevere Thunderstorm WarningLWXAlbemarle, Nelson35 min
Aug 6, 5:53 PM EDTSpecial Marine WarningLWX97 min
Aug 6, 5:58 PM EDTAreal Flood WarningLWXAlbemarle, Nelson3 hr
Aug 6, 6:37 PM EDTSpecial Marine WarningLWX98 min
Aug 6, 7:10 PM EDTSpecial Marine WarningLWX95 min
Aug 6, 7:27 PM EDTSmall Craft AdvisoryLWX14 hr

Nearby

Severe Thunderstorm Warnings in Virginia, 2016Every severe thunderstorm warning in 2016

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.